Monitor goes black, red tint
Today I turned on my computer and waited for it to load. When it got to the desktop there was a red tint to the monitor that went away after about 5 seconds. I thought nothing of it until about 30 seconds later, the screen went black. It didn't go in to power saving or sleep mode, just black. I can turn off the monitor and back on again and it does the same thing, red tint for 5 seconds, goes away, then goes black after 30 seconds. I thought it might be my video card going bad so I tried a different one with the same results. I've just tried a different monitor and it works fine. So I'm wondering what the next step would be. I got the monitor second hand so I'd have to check to see if there's still a warranty, but since I don't know much about monitors I just wanted to see if there's a simple fix or if this is an unfixable problem.